"It's fantastic. Women now don't have to travel out of the UK," Prof David said. "They can have their family with them. There are less expenses. So all good things."

The surgery team from UCLH and the Great Ormond Street Hospital previously travelled to Belgium to train at a facility in Leuven, where more than 40 such operations have been carried out.

Spina bifida is a condition that develops during pregnancy when the bones of the spine do not form properly, creating a gap that leaves the spinal cord unprotected.

It can cause a baby's spinal fluid to leak and put brain development at risk, potentially leading to long-term health and mobility problems.

More than 200 children are born with spina bifida every year in the UK, according to charity Shine.

The roll-out of the pre-birth surgery in the UK comes after a major US trial confirmed the health and mobility benefits of the procedure.

That trial showed a 50 per cent reduction in the need to have shunts inserted in the brain to drain fluid, a procedure that carries long-term complications. Brain and motor functioning are improved for non-shunted children, researchers said.

Children in the US study were also more independent after the surgery, Prof David said.

"There were some children who had grown up following foetal surgery who were walking and you wouldn't expect them to be walking if they hadn't had it," she said.

"So it's important to be able to offer the surgery to patients here in the UK."

Gina Beddoe and her partner Dan Lavis with their daughter, Frankie Lavis. She had the surgery in BelgiumCredit:
Jay Williams

During the procedure, an incision is made in the womb in a precise location to access the baby's spine and stitch closed the gap caused by spina bifida.

The surgery, which takes some 90 minutes, carries a risk of premature labour but less invasive keyhole methods are being explored.

"We put the mum on some drugs that help relax them, but there is still a risk," Prof David said.

She said a "foetoscopic" approach is being developed with the hope this will further minimise maternal complications.

The surgeries will be available for suitable patients through the newly established Centre for Prenatal Therapy at UCLH and GOSH, made possible by funding of £450,000 from the hospitals' charities.

"These vital funds have provided training for the surgical team and will fund surgery for the first 10 patients," UCLH's clinical director for women's health Professor Donald Peebles said.